1323552551 has 2 divisors, whose sum is σ = 1323552552. Its totient is φ = 1323552550.

The previous prime is 1323552523. The next prime is 1323552557. The reversal of 1323552551 is 1552553231.

It is a strong prime.

It is an emirp because it is prime and its reverse (1552553231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1323552551 - 2¹⁰ = 1323551527 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1323552557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661776275 + 661776276.

It is an arithmetic number, because the mean of its divisors is an integer number (661776276).

Almost surely, 2^1323552551 is an apocalyptic number.

1323552551 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323552551 is an equidigital number, since it uses as much as digits as its factorization.

1323552551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22500, while the sum is 32.

The square root of 1323552551 is about 36380.6617724307. The cubic root of 1323552551 is about 1097.9445226520.

The spelling of 1323552551 in words is "one billion, three hundred twenty-three million, five hundred fifty-two thousand, five hundred fifty-one".